zachary.olson
zachary.olson 1d ago • 0 views

Decimal to Binary Conversion: Practice Problems with Answers

Hey everyone! 👋 Let's dive into decimal to binary conversion. It's super useful in computer science, and I've got some practice problems for you. Good luck! 🍀
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cody429 Jan 2, 2026

📚 Topic Summary

Decimal to binary conversion is the process of converting a number from base-10 (decimal) to base-2 (binary). Each digit in a binary number represents a power of 2. To convert, you repeatedly divide the decimal number by 2, noting the remainders at each step. The binary equivalent is obtained by reading the remainders in reverse order.

For example, to convert the decimal number 13 to binary:

  • 13 ÷ 2 = 6, Remainder: 1
  • 6 ÷ 2 = 3, Remainder: 0
  • 3 ÷ 2 = 1, Remainder: 1
  • 1 ÷ 2 = 0, Remainder: 1

Reading the remainders in reverse order, we get 1101, so $13_{10} = 1101_2$.

🧮 Part A: Vocabulary

Match the terms with their correct definitions:

Term Definition
1. Decimal A. Base-2 numeral system
2. Binary B. A digit in binary, either 0 or 1
3. Bit C. The rightmost bit
4. Least Significant Bit (LSB) D. Base-10 numeral system
5. Most Significant Bit (MSB) E. The leftmost bit

(Match the numbers 1-5 to the letters A-E)

✍️ Part B: Fill in the Blanks

Complete the following paragraph using the words provided: (powers, 2, remainders, base, binary)

Decimal to _______ conversion involves expressing a _______-10 number in _______-2. This is achieved by repeatedly dividing the decimal number by _______ and noting the _______. The _______ equivalent is read by taking the _______ in reverse order.

🤔 Part C: Critical Thinking

Explain in your own words why binary is used extensively in computer systems. What are its advantages?

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